QA79ICD-11 MMS 2026-01
Drug or substance interactions without injury or harm
Description
A drug interaction is a situation in which a substance affects the activity of another drug when both are administered together. Includes increased effectiveness, decreased effectiveness or a new effect that is not produced from either drug on its own. No injury or harm occurred as a result.
Index terms
- Drug or substance interactions without injury or harm
- drug-drug interaction
- drug-food interaction
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- prescription and non-prescription interaction
Excludes
PL13.9– Drug or substance interactions, as mode of injury or harm
Exclusions from above levels
Sibling codes
QA70– Overdose of substance without injury or harmQA71– Underdosing without injury or harmQA72– Incorrect substance without injury or harmQA73– Incorrect route of administration without injury or harmQA75– Incorrect duration of administration or course of therapy without injury or harmQA76– Medication or substance that is known to be an allergen without injury or harmQA77– Medication or substance that is known to be contraindicated for the patient without injury or harmQA78– Expired or deteriorated medication or substance without injury or harmQA7A– Inappropriate stoppage or discontinuation of drug without injury or harmQA7Y– Other specified circumstances associated with exposure to a drug, medicament or biological substance influencing the episode of care without injury or harmQA7Z– Circumstances associated with exposure to a drug, medicament or biological substance influencing the episode of care without injury or harm, unspecified
Foundation entity
Drug or substance interactions without injury or harm – http://id.who.int/icd/entity/854464302
Part of: 24: Factors influencing health status or contact with health services